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two week old weed plant

100 Watt CFL Grow / Update#2: What Should A Marijuana Plant Look Like At 2 Weeks Old?

One of the most common questions asked by novice growers is “What should my plants look like at x days/weeks old?”

Naturally, anyone putting their time and effort into a project wants to have a point of reference against which to judge their own progress (or that of their pants, in this case). The answer is:

Plants will vary in size and appearance depending on a variety of factors: Genetics, soil, lighting, nutrients, temperature, handling, and the elusive “green thumb” factor. As you can imagine, a plant growing outdoors under full sun in June (northern hemisphere) will be a lot bigger at 2 weeks old than a plant growing in a converted computer case running 50 watts of lighting!

In any case, cannabis plants do tend to develop certain physical characteristics at certain times in their life span (first true leaves after 3 – 4 days, alternating nodes after 30+ days of vegetative growth, calyxes and pistils after a week of flowering light schedule, for example). Barring any problems, after two weeks of vegetative growth, you can expect to see a plant with several sets of leaves, and are likely to be able to smell that characteristic “mary jane” smell on your fingers after gently rubbing the leaves.

Don’t be surprised if your plants leaves alternate between “reaching up” towards the light and “sloping downwards” towards the ground – this is normal. Leaf color will range from an intense, deep green to a light yellow-green or “lime” color. What isn’t normal is yellow leaves with stunted-looking new growth, patches of brown or browned edges, dark spots or a mottled look to the leaves, or leaves curling up into a sort of “taco” shape.

Here are some shots from our current 100 Watt CFL grow. A two-week old Dinafem Critical + plant. She’s (yes, “she” – this is the only feminized seed in this grow) looking quite healthy and of good size for the humble 100Watt grow. She’s ready for transplantation into the larger final grow pot.

Next is a picture of a 10-day-old “Royal Queen Seeds Automatic x Double Gum” cross breed. Both of these plants are looking healthy, and have a particularly strong aroma so far:

For comparison, here is a plant that is not doing well. It is one of the three “Afghan Kush x Double Gum” cross plants in the grow. This plant has lagged behind from the start, although the others are exactly the size of the RQSxDG pictured above. Sometimes a “runt” does show up! This is one of the reasons I always recommend that first time growers grow two plants and then pick the strongest of the two to take into flowering.

This plant has the same soil, lighting, and music (yes, these plants seem to dig the new QOTSA album…) as the others, it’s just not doing well. The green thumb in me wants to try to save it, but I want to keep this little 100Watt grow under wraps so I can focus on our larger medical grow, so this plant will not make the transplant roster:

Notice the stunted look to the leaves – they don’t have the length and width of the previous pictured plants, and the color is a pale greenish yellow. In particular, the new growth leaves at the top look wrinkled and “mini”. Hey – this happens! In the wild, this plant would simply be overshadowed by taller neighbors and eventually just fade away. Why did this happen to this plant? My guess is simply that the genetic “roll of the dice” wasn’t particularly kind to this specimen. As this grow progresses, the different traits of each plant will become apparent – it will be very interesting to see how the “daddy” Double Gum plant’s offspring look with both the Afghan Kush mother and Royal Automatic mother plants. And all this under 100 watts – get yer popcorn ready!

[Author and Medical Marijuana Grower Glenn Panik’s “How To Grow Cannabis At Home: A Guide To Indoor Medical Marijuana Growing”, is available on iBooks here, for the Amazon Kindle or via Smashwords here. You can also order the ‘stealth title’ of our information-packed ebook for the Kindle here. Protect your privacy!]

One of the most common questions asked by novice growers is "What should my plants look like at x days/weeks old?" Naturally, anyone putting their time and effort into a project wants to have a point of reference against which to judge their own progress (or that of their pants, in this case). The answer…

Cannabis Growth Timelapse: One Chapter at a Time (With Pictures)

Last updated: May 4, 2020

The growth of a cannabis plant can be divided into 5 main chapters: germination, seedling, vegetative, flowering, and finally, budding. Within these stages of growth, many changes occur to the plant that should be noted and carefully watched for by the grower. Here, we’re going to dive into these different stages, to give you an idea of how long things generally take and what to keep an eye out for during cannabis growth.

Chapter 1: Germination

This is where it all begins, the seed. During this formative stage of growth the cannabis seed, once planted or placed in a germination station, breaks apart and the spindly taproot emerges looking for nutrients.

Featured Image Credit: High Times

1-week-old plant

The seed should be hard, dry and darker brown to grey before being used. Younger seeds won’t “pop” as readily. It can take up to a week to 10 days for the plant to finally emerge from its seed, but once it finally does it is ready to be transferred into a more permanent location.

This is assuming the grower is using a germination technique that doesn’t involve direct planting, otherwise, they simply need to wait for the plant to sprout to begin the seedling phase.

Chapter 2: Seedling

As the taproot of the germinated plant begins to take hold, the first set of iconic fan leaves begin to develop. This signals the beginning of the plant’s seedling stage of growth and should be placed in a large growing area immediately if it hasn’t been done so already.

2-week-old plant

The first leaves should be developing at this point, which the plant uses to photosynthesize light into nutrients.

It will grow a bit taller and begin to straighten up during this week. The very first new growths will appear as well, which will be another leaf along with the development of additional blades on the current leaves. Initially, they will be quite small.

Featured Image Credit: Big Buds Mag

3-week-old plant

A healthy plant will start turning a more vibrant green color and those blades will finally start becoming sizable, it will start looking more and more like a marijuana plant at this point. Once these seedlings fully develop these initial leaves and blades, they will be considered maturing and move onto the next stage of growth.

Chapter 3: Vegetative

After those initial leaves develop the plants begin to enter a stage of explosive growth. This is the vegetative stage. A healthy vegetative stage is the period of growth most associated with great yields, as the size of the plant can make a huge difference at the end of it all.

This is also the stage with the greatest variability for the length of time it will take to get through, dependent on strains and growing conditions.

It can last anywhere from 3-16 weeks, so knowledge of the particular strain being used is crucial here.

4-6 week-old plant

Somewhere in this time-frame is generally when the sex of a plant can be determined. The pre-flowers develop here, though they can be quite small, and once sex is determined it is time to separate the males from the females before any fertilization can take place.

Sexing can technically wait until the flowering stage, but cautious growers should remove them now.

Featured Image Credit: 101GrowLights

7-12 week-old plant

The length of the vegetative stage of growth is dependent on the genetics of the plant, as well as the period of time they are receiving light. Plants can technically remain in the vegetative state pretty much indefinitely, but eventually, it will hit its max growth or the amount of growth comfortable for the room and need to be switched over to flowering.

There will be a ton of foliage at this point and the plants will want more water than seems possible. Any training should be done at this stage, as long as the plant is healthy and growing rapidly.

Chapter 4: Flowering

This is the final stage of cannabis growth. All the previous work keeping the plant healthy and structurally sound pays dividends here as the plants begin to produce their buds. All males need to be removed at this point, otherwise, fertilization will occur and the females will lose a fair amount of yield and quality.

Flowering is triggered by the light cycle shifting to 12 hours on and off, so the timing of it will vary from grow to grow but this generally begins around week 13 of a grow.

13-14 week-old plant

This is the transition phase. It technically isn’t flowering at this point, but the plant will begin preparing for bud growth. The biggest growth occurs in this short period, the structure it develops within the vegetative stage is important now as the plant can almost double in height during this transition.

Towards the end of these transition weeks, the first wispy, white hairs known as pistils will begin developing. These are what eventually will become the buds that you’re after.

Featured Image Credit: Reddit

15-16 week-old plant

Those pistils will begin developing larger and larger and become darker in color. This is also when the odor from the plant becomes very apparent, so a good filtration system is a must at this point for indoor grows.

The growth of the plant will begin to slow down here as well, eventually stopping altogether as the plant’s energy will be focused entirely on the buds.

Buds will not have grown too much at this point, so don’t worry if they are still fairly small.

Chapter 5: Budding

17 weeks and onward

The final stage of flowering will have begun at this point for most plants, and the length of time can be variable. Buds will begin to grow very quickly now, seemingly overnight turning into dense flowers all over the plant.

The rest of the growth is up to the plant, but when it seems to be getting close to harvest time flushing nutrients is important for a quality tasting harvest. Simply flush the plants with pH-balanced water and stop administering nutrients at this time to ensure a good harvest.

Featured Image Credit: Reddit

Conclusion

The weeks involved for each plant are variable for a lot of conditions, but this is a good general gist of what each week and group of weeks involve for standard cannabis grow.

Things like auto-flowering plants or quickly growing strains will heavily veer off this, but for the most part, following this guide will give a grower a good idea of what to expect each week of their growth.

Featured Image Credit: Pexels

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Cannabis Growth Timelapse: One Chapter at a Time (With Pictures) Last updated: May 4, 2020 The growth of a cannabis plant can be divided into 5 main chapters: germination, seedling, ]]>